LED Display Emission Clock Control for Flicker Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices using light emitting diodes (LEDs) suffer from flicker phenomena, which affect image quality and increase power consumption.
Innovation Solution
A display device with controlled emission time of light emitting devices, utilizing different lengths of emission clock signals to minimize flicker and optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If light emitting diodes are used in display devices, then lighting speed and light emitting efficiency are improved, but flicker phenomenon occurs affecting image quality and increasing power consumption
Solution Approach 1:
The patent applies periodic action by using emission clock signals with different lengths (first emission clock signal and second emission clock signal) to control the light emitting diodes in different subpixels. This periodic control with varying durations regulates the emission timing, preventing flicker while maintaining the fast lighting speed advantage of LEDs.
Solution Approach 2:
The patent implements dynamics by making the emission clock signal lengths variable rather than fixed. The controller dynamically adjusts the emission time of different subpixels by applying emission clock signals of different lengths, allowing adaptive control that eliminates flicker while preserving the rapid response characteristics of LED materials.
2Use of energy by moving object
If light emitting diodes are used in display devices, then light emitting efficiency is improved, but power consumption increases due to flicker phenomenon
Solution Approach 1:
The patent uses periodic emission control through emission clock signals of different lengths to regulate LED operation. By controlling the emission timing and duration periodically, the system maintains high light emitting efficiency while avoiding the continuous operation that causes flicker-related power consumption increases.
Solution Approach 2:
The patent ensures continuous useful action by maintaining LED emission during the active emission period controlled by the emission clock signals. This continuous controlled emission maximizes light emitting efficiency while the precise timing control prevents the energy waste associated with flicker phenomena.
3Object-generated harmful factors
If emission time of light emitting devices is controlled using different lengths of emission clock signals, then flicker phenomenon is prevented and image quality is enhanced, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the display into different subpixels (first subpixel, second subpixel, third subpixel) and controlling each with specific emission clock signals of different lengths. This segmentation approach prevents flicker in each subpixel while maintaining overall system simplicity through modular control architecture.
Solution Approach 2:
The patent implements universality by using a single controller to generate and manage multiple types of emission clock signals (first emission clock signal, second emission clock signal) that serve different subpixels. This multi-functional controller handles both the timing and duration control for all subpixels, enhancing image quality without requiring separate control systems for each subpixel.
Data Source
AI summary
Embodiments of the present disclosure relate to a display device, and more particularly, to a driver for driving a light emitting device, and a controller for controlling the driver and supplying a plurality of emission clock signals to the driver. The length of a first emission clock signal is different from the length of a second emission clock signal, thereby eliminating a flicker phenomenon.